If you haven't already seen, Sparkfun just announced the rules for this year's competition. It's a shame there is no aerial course this year, but let's face it; it was only a matter of time before there was a nasty accident.
There are still some details to be announced, such as the details around the special 150 point-earning short-cut. I'm definitely planning on entering again this year but probably need to wait until all details are available before I start designing a new bot.
Also this year there will be a battlebot competition. I'm intrigued by this but it is something I so far know nothing about so I think I'll just be a spectator for this event.